Ariana Grande tweeted "please take care of yourself" after Mac Miller was arrested on suspicion of driving under the influence in the early hours of Thursday morning.

The rapper, 26, was jailed for allegedly crashing his white 2016 G-Wagon into a power pole in San Fernando Valley, California, and fleeing the scene - while drunk.

Police are said to have later tracked him down at his home after matching the car's licence plates to his address.

People reports that the rapper - real name Malcolm McCormick - was held on $15,000 bail prior to his release from jail Thursday morning and is set to appear in court on June 7.

This was the aftermath (Image: MEGA)

Shortly after their split had been announced, Ariana spoke out to praise her ex-boyfriend in a gushing post on her Instagram stories.

However, despite her kind words, days later fans had noticed they were no longer following each other on the photo sharing site, which might be why she felt she had to share such a public tweet with her 57million followers.

The No Tears Left To Cry singer wrote: "Hi! This is one of my best friends in the whole world and favorite people on the planet Malcolm McCormick.

Ariana shared this after their split was reported (Image: Instagram/arianagrande)

"I respect and adore him endlessly and am grateful to have him in my life in any form, at all times regardless of how our relationship changes or what the universe holds for each of us!"

She added: "Unconditional love is not selfish. It is wanting the best for that person even if at the moment, it's not you.

The pair were together for 21 months (Image: Getty Images Europe)

The pair at the One Love Manchester Concert (Image: Supplied by WENN)

"I can't wait to know and support you forever and I'm so proud of you!!"